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#137 – Alex Filippenko: Supernovae, Dark Energy, Aliens & the Expanding Universe
Lex Fridman Podcast
Is There a Dark Energy?
There could be this interesting field that we don't yet understand that's morphing over time. The data just have to become a lot better before we can rule out most of them. No class of models has been ruled out completely, but in general, I think we still have really a lot to learn about what's causing this observed acceleration of the expansion of the universe.
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